Earlier quoted context omitted.
current hash rate GH/s: 300,000,000 // https://blockchain.info/charts/hash-rate GH/s/w: 4.6 // http://www.coindesk.com/a-look-inside-kncminer/ watts to provite current hash rate: 300,000,000/4.6 = 65,217,391.30 w kw to provide 1s: 65,217.39 an hour of that: 65,217.39*3600 234,782,604 kwh 10c per kwh => $23,478,260.4 per hour 24 hours => $563,478,249.60 my own figures are even more wacky so I would welcome some better…
Your calculation is WAY off, which the bizarrely high end result should have made obvious. Multiplying by 3600 is where you go wrong. 65,217kW is the energy usage. Providing that for an hour takes 65,217kWh - not multiplied by anything. So that's $6,521 per hour, $156,521 per day.
ps it wasn't obvious at all, that's why i wrote "even more wacky" as mark of how solid i thought the figures were.
3600*7 = 25200 transactions for $6521.
they'd really want to see about increasing the block size.